骨料嵌锁型垃圾焚烧灰渣路面基层的制备与性能研究  

Investigation on Preparation of Coarse Aggregate Interlocking Municipal Solid Waste Incineration Bottom Ash Road Base Material and Performance Study

作　　者：朱子龙 魏磊 史中玲 刘德洋 刘聪 沈卫国[1,2,3,4] 廖丹 ZHU Zi-long;WEI Lei;SHI Zhong-ling;LIU De-yang;LIU Cong;SHEN Wei-guo;LIAO Dan(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China;Hubei Chushengke Road and Bridge Technology Development Co Ltd,Xiangyang 441100,China;Xiangyang Key Laboratory of Comprehensive Utilization of Bulk Solid Waste and Green Building Materials,Xiangyang 441100,China)

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 [3]湖北楚晟科路桥技术开发有限公司,襄阳441100 [4]大宗固废综合利用与绿色建材襄阳市重点实验室,襄阳441100

出　　处：《武汉理工大学学报》2024年第8期8-14,共7页Journal of Wuhan University of Technology

基　　金：湖北省交通科技项目(2020-186-1-13)。

摘　　要：利用生活垃圾焚烧灰渣制备一种骨料嵌锁型的路面基层,优化了各集料的最优配合比,并对骨料嵌锁型垃圾焚烧灰渣路面基层材料的体积稳定性、力学性能、SEM微观结构以及环境影响进行了研究。级配设计达到粗细骨料的嵌锁作用,用10%的垃圾焚烧灰渣代替细集料可以提高路面基层的性能。试验结果表明,骨料嵌锁型垃圾焚烧灰渣路面基层表现出较高的早期和后期强度,垃圾焚烧灰渣中的水泥熟料矿物及活性SiO_(2)、Al_(2)O_(3)与水泥水化产物Ca(OH)_(2)反应形成水化硅酸钙,垃圾焚烧灰渣及其基层材料的重金属离子浸出的浓度均低于安全值。研究证实了垃圾焚烧灰渣用于制备骨料嵌锁型路面基层技术的可行性,为垃圾焚烧灰渣的综合化利用探讨出一条可持续的途径。We developed an aggregate interlocking pavement base using MSWI bottom ash,focusing on optimizing the ideal mix ratio for each aggregate.The research delved into the volume stability,mechanical properties,SEM microstructure,and environmental impact of the MSWI bottom ash pavement base material derived from aggregate interlocking.Through gradation optimization,the interlocking effect of coarse aggregates was successfully achieved.By substituting 10% of fine aggregates with MSWI bottom ash,the performance of the pavement base was notably enhanced.Experiments demonstrated that the MSWI bottom ash pavement base derived from waste incineration exhibits superior early and late strength properties.The MSWI bottom ash contains active SiO_(2) and Al_(2)O_(3),they reacts with the cement hydration product i.e.Ca(OH)_(2) and produces calcium silicate hydrates.Moreover,the concentration of heavy metal ions leaching from the MSWI and base material remains below the established safety threshold for waste incineration.Furthermore,the leaching concentration of heavy metal ions from the MSWI bottom ash and it's base material remained below the standard safety threshold.This verified the validates the viability of utilizing MSWI bottom ash in preparing aggregate interlocking pavement bases,explored a sustainable approach for the comprehensive utilization of such waste materials.

关 键 词：垃圾焚烧灰渣 路面基层材料 骨料嵌锁 环境影响 

分 类 号：U416.11[交通运输工程—道路与铁道工程]